i have a rheem 90 plus furnace that is about 17 years old. It will not stay on.
Your flame sensor is not seeing a flame. You said you replaced the board. If the new board is part number 62-24084 it is a new upgrade board and requires a sensor upgrade or it will not work. See pitcure below. Rheem Tech support: Reference 62-24084 upgrade. ALL FURNACES BEFORE 1994 WILL NEED A NEW FLAME SENSOR KIT OR THE NEW CIRCUIT BOARD WILL NOT WORK. If your existing Circuit Board has 2 green lights and NO Amber light. You will need to upgrade your new circuit board with a FLAME SENSOR KIT. If there is no flame sensor then you will need to install one, run the supplied wires per the instructions to the new 3 light control board. ( 2 Green & 1 Amber Light) If there is an existing flame sensor, check the wiring, if it is spliced into one of the Hot surface Ignitor wires it will need to be disconnected and then run the supplied wires per the instructions to the new 3 light control board. ( 2 Green & 1 Amber Light)
Flame sensors Installed with 2 Light Boards was spliced into the Ignitor wires. Flame sensors Installed with 3 Light Boards must wire back to the control board. ALL Rheem HOT Surface Ignition Furnaces should be equipped with a Remote Flame sensor. If the Furnace does not have a Flame Sensor, a remote flame sense Kit should be installed.
read more and respond »Posted 5 years ago by stanhvac1 in Heating
